Bath tub spa



FIG. 1 is a perspective view of the bath tub spa according to the present invention;

FIG. 2 is a top view of the bath tub spa of FIG. 1;

FIG. 3 is front view of the bath tub spa of FIG. 1;

FIG. 4 is a first side view of the bath tub spa of FIG. 1;

FIG. 5 is a second, opposite side view of the bath tub spa of FIG. 1;

FIG. 6 is a rear view of the bath tub spa of FIG. 1; and,

FIG. 7 is a bottom view of the bath tub spa of FIG. 1. 

The ornamental design for the bath tub spa, as shown and described. 